The problems stem from an improperly manufactured spring, located inside one door handle in particular. Ford explains:

"In the affected vehicles, the left-hand interior door handle may have been built with a misoriented return spring, which could increase the potential for the return spring to become unseated. If the interior door handle return spring is unseated, the inertial loads experienced by the interior door handle may cause the door to unlatch during a side impact, increasing the risk of injury in a crash."

Though the issue is a serious one, Ford says that it knows of no accidents or injuries linked to the problem.

The recall affects 2017 Mustang vehicles built at Ford's Flat Rock Assembly Plant between January 13, 2017, and January 31, 2017. Ford says that there are 5,756 of those vehicles registered in North America: 5,470 in the U.S., 266 in Canada, and 20 in Mexico

Ford will mail recall notices to owners of the affected vehicles, asking them to schedule repairs through their local dealerships. Dealers will inspect the return spring on the left-hand interior door handle and service it as required. The fix will be carried out at no cost to owners.

If you own one of these vehicles and have further questions, you're encouraged to call Ford Customer Service at (800) 392-3673 and ask about recall #17C04.